4 PREPARING THE SPARE CPU SPARC TO REPLACEMENT

The SPARC CPU board of the "Dump Workstation" decribed in Chapter 7 can be used as a spare SPARC to replace a failing one.

Before the replacement, the spare SPARC has to be reconfigured to boot from the SCSI device with the Id equal to 3. To do this:

1. run the spare SPARC in "boot monitor" mode, pressing "STOP A" if a Graphic Monitor is used, or the "Break" key if a VT100 is used;

2. change the boot-device environment variable:

setenv boot-device disk0

The spare SPARC can then be halted and powered off, and its CPU board installed on the Instrument SPARC.

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